Senior Linux Administrator

Grow, innovate, and generate progress: Harness your expertise to solve challenges and celebrate success!

Job Summary: 
JCS Solutions LLC (JCS) is seeking a Senior Linux Administrator to support the Infrastructure Services team to maintain and optimize the Linux production environment. The candidate will be responsible for sustaining Linux servers as well as the conceptualization, design, development and implementation of new Linux capabilities. The candidate is expected to work well as a part of the Systems Administration team using ITIL best practices as well as work independently on assigned tasks. Candidate is expected to support the entire service lifecycle from design through development to production, building and deploying Linux based systems in a virtual environment.
Candidate should be familiar with system automation technologies, basic database administration and tuning. Candidates must demonstrate a high degree of problem-solving ability in a complex environment and be able to communicate effectively, both to the customer and to team members.  If you are interested in a challenge and a great working environment, apply today!

What’s in it for you:

• Join a premier technology firm specializing in innovative solutions.
• Be part of a collaborative, inclusive, and innovative work culture.
• Enjoy tremendous growth potential in a high-performing team environment.
• A robust benefits package:
  • Health, dental, and vision insurance
  • Life insurance
  • Short-and-long term disability
  • Paid time off (PTO)
  • 401k retirement plan with employer match
  • Annual Professional Development Reimbursement Program
  • And more!

What you will do:

• ​ Provision servers and environments
• Manage user access
• Maintain servers in a virtual environment
• Automation knowledge scripting in Unix shell and Ansible playbooks
• Maintain and improve configuration management templates
• Monitor system performance and respond to alerts
• Establish and maintain NTP services in the production environment
• Maintain satellite servers for the agency, software releases and patches

What you will bring:

• STEM Bachelors degree with 8+ years, or STEM Masters degree with 6+ years of experience in IT operations working with Linux servers and Virtualization. Additionally, specific years of experience can be taken into account in lieu of degree.
• Required Clearance: Active Top Secret with SCI
• DoD 8570/8140 IAT Level II certification (Security+, CySA+, GSEC, or CCNA Security) required
• Experience with the following emerging technologies or an equivalent technology: Kubernetes, Open Shift, Containers, GitHub, Ansible Tower
• Ensure compliance with security standards and practices aligned with DoD STIGs.
• Experience with web servers and use of certificates
• Open Source: Apache Hadoop, Zookeeper, Puppet
• App Servers: JBoss, Tomcat, Jetty, NGINX,
• 2-3 years of experience with web server management and implementation; troubleshooting of websites, applications, and security implementations.
• Understanding of virtualized infrastructure, server backup and restoral procedures, application of STIGs and cyber hardening approaches.
• Experience with log file analysis
• Experience with Red Hat Satellite tool for deploying, configuring, and maintaining Red Hat Enterprise Linux (RHEL) across physical, virtual, and cloud environments.
• Understanding of Red Hat, provisioning, and patching, often using Satellite Capsules for distributed content delivery and local services like DHCP/DNS in large or remote setups. It centralizes RHEL management, improving security and efficiency by handling subscription management, content views, and system auditing from a single console.
• Understanding of Red Hat command line tools: System Management, Manage RPM packages, and Package Management.

How you will wow us:

• 2-3+ years of Windows Server experience.
• Red Hat Certification - Red Hat Certified System Administrator (RHCSA) (Preferred)

JCS Solutions (JCS) is a premier technology firm providing innovative solutions and high-quality services in defense, national security, and civilian sectors. JCS offers enterprise-wide solutions including cloud computing, software development, cybersecurity, digital modernization, and management consulting for the federal government. At JCS, we elevate our customers’ mission through the application of technology and professional services. Our commitment to investing in our workforce drives innovation and progress for our clients, employees, and communities. JCS has been certified as a Great Place to Work four years in a row and was awarded Washington Post’s Top Places to Work for 2024 and 2025.


Our employees embody our core values, and we are looking for others who do too!

• Customer Experience: Strive for excellence and delight our clients
• Innovation: Embrace creative thinking to enable continual growth and powerful solutions
• Accountability: Take ownership of and pride in our actions and service delivery
• Inspire: Be inspired to be your best self and have fun in the process
• Integrity: Do the right thing, the right way, every time!
• Stewardship: The careful and responsible management of something entrusted to our care.

Commitment to Non-Discrimination
All qualified applicants will receive consideration for employment without regard to any status protected by applicable federal, state, or local laws.